APA (7th ed.) Citation

Pereira, S. (2021). The Terraced Slopes of the Douro Valley.

Chicago Style (17th ed.) Citation

Pereira, Susana. The Terraced Slopes of the Douro Valley. 2021.

MLA (8th ed.) Citation

Pereira, Susana. The Terraced Slopes of the Douro Valley. 2021.

Warning: These citations may not always be 100% accurate.